Is this bug works only in IE? What if I switch my browser to mizilla, is it safe then? I found a lot of cookies in my computer and some of theme are detected as spyware. what does it means, coz sometimes I opened out cookie files and it contains lots of info which is usually originated from my PC. like my e-mail address visited website etc... I my own Idea cookies was created to increase the speed of your computer when browsing the internet.
For example if you browse yahoo some files required by yahoo are saved inside your computer so that the next time you login or browse the same site it will not look again for that file in the internet but instead load the file from your local computer. In this way it will help you to browse the net faster, the more cookies you have the more faster the browser is.

This is the purposed of having cookies inside your computer, it just so happened that potential user or let say a hackers use the cookies as entry point. that's the problem, that is why cookies or some cookies detected as spyware by some anti-spy program...